if tanh x =2/3, find the real value of x
principal normal vector of r(t)=-3
2x + 3y = 21
x - y = 3
find x and y
(-3)+ $\sqrt{3^2-4(1)(-10)/2}$
x= -2+- $\sqrt{\}$2^2-4(1)(-15)/2(1)
M = 10, then M²+2M
0.08*100
2 of 3/9*18+1(6+3)
2=2(x*x)+3x
($8/125)^{2x-1}$ = $(25/4)^{2x}$
